STRESS DEPENDENCE OF THE COEFFICIENT OF MOISTURE DIFFUSION IN COMPOSITE-MATERIALS

被引：39

作者：

NEUMANN, S

MAROM, G

机构：

[1] Hebrew Univ of Jerusalem, Casali, Inst of Applied Chemistry,, Jerusalem, Isr, Hebrew Univ of Jerusalem, Casali Inst of Applied Chemistry, Jerusalem, Isr

来源：

POLYMER COMPOSITES | 1985年 / 6卷 / 01期

关键词：

COMPOSITE MATERIALS - Fiber Reinforced - MATHEMATICAL MODELS - MOISTURE - Diffusion - STRAIN - STRESSES;

D O I：

10.1002/pc.750060103

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

A model for the effect of external loading on diffusion into the bulk resin matrix of unidirectional composite materials is proposed. The model attributes the effect to a change in the free volume of the resin matrix, which is equal to its volume strain. The latter is calculated by substracting the volume strain of the fibers from that of the composite. The ratio of the diffusion coefficents in the stressed and unstressed states is expressed as a function of the stress level, the volume fraction of the fibers, and the angle between the applied stress and the fiber direction. Calculations for a glass-fiber-reinforced epoxy composites are presented.

引用

页码：9 / 12

页数：4